SIP Status Reports
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Status of Utah Designated Areas
Status of Utah Designated Areas
Utah Areas by NAAQSNOTE: As of 03/12/2021, these reports are no longer being updated. For the latest information, see the SIP Status Tools.
Jump to Utah section for: CO (1971) Lead (1978) Lead (2008) NO2 (1971) Ozone-1Hr (1979) Ozone-8Hr (1997) Ozone-8Hr (2008) Ozone-8Hr (2015) PM-10 (1987) PM-2.5 (1997) PM-2.5 (2006) PM-2.5 (2012) SO2 (1971) SO2 (2010)
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Utah CO (1971) Areas Return to map |
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| Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Design Value Annual (ppm) (entire area) |
Meets NAAQS |
SIP Requirements Original/ Approved |
Clean Air Determination Citation Effective Date Click to view FR notice |
Redesignation Request Date |
Redesignation Citation Effective Date Click to view FR notice |
| Ogden Area | Maintenance | 11/15/1990 | Moderate <= 12.7ppm | 82,825 | 2019 | 1.3 | Yes | 4 / 4 | |
01/14/1997 | 05/08/2001 66 FR 14078 |
| Provo Area | Maintenance | 11/15/1990 | Moderate > 12.7ppm | 166,596 | 2019 | No Data | 6 / 6 | |
04/01/2004 | 01/03/2006 70 FR 66264 |
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| Salt Lake City Area | Maintenance | 11/15/1990 | Not Classified | 186,440 | 2019 | 2.8 | Yes | 2 / 2 | |
11/24/1995 | 03/22/1999 64 FR 3216 |
Utah Lead (1978) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
Utah Lead (2008) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
Utah NO2 (1971) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
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Utah Ozone-1Hr (1979) Areas Return to map Top of page |
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| Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Design Value Annual (ppm) (entire area) |
Meets NAAQS |
SIP Requirements Original/ Approved |
Clean Air Determination Citation Effective Date Click to view FR notice |
Redesignation Request Date |
Redesignation Citation Effective Date Click to view FR notice |
| Salt Lake City Area; (Davis County / Salt Lake County) | Maintenance (NAAQS revoked) | 11/15/1990 | Moderate | 1,336,134 | 2017-2019 | 0.103 | Yes | 22 / 22 | |
11/12/1993 | 08/18/1997 62 FR 38213 |
Utah Ozone-8Hr (1997) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
Utah Ozone-8Hr (2008) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
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Utah Ozone-8Hr (2015) Areas Return to map Top of page |
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| Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Design Value Annual (ppm) (entire area) |
Meets NAAQS |
SIP Requirements Original/ Approved |
Clean Air Determination Citation Effective Date Click to view FR notice |
Redesignation Request Date |
Redesignation Citation Effective Date Click to view FR notice |
| Northern Wasatch Front | Nonattainment | 08/03/2018 | Marginal | 1,615,574 | 2017-2019 | 0.077 | No | 3 / 0 | |
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| Southern Wasatch Front | Nonattainment | 08/03/2018 | Marginal | 515,895 | 2017-2019 | 0.070 | Yes | 3 / 0 | |
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| Uinta Basin | Nonattainment | 08/03/2018 | Marginal | 47,317 | 2017-2019 | 0.089 | No | 3 / 0 | |
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Utah PM-10 (1987) Areas Return to map Top of page |
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| Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Average Estimated Exceedances (est. exc.) (entire area) |
Meets NAAQS |
SIP Requirements Original/ Approved |
Clean Air Determination Citation Effective Date Click to view FR notice |
Redesignation Request Date |
Redesignation Citation Effective Date Click to view FR notice |
| Ogden Area | Maintenance | 09/26/1995 | Moderate | 82,825 | 2017-2019 | Insufficient Data | 3 / 1 | 02/06/2013 78 FR 885 |
03/27/2020 85 FR 10989 |
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| Salt Lake County | Maintenance | 11/15/1990 | Moderate | 1,029,655 | 2017-2019 | 0.3 | Yes | 3 / 3 | |
03/27/2020 85 FR 10989 |
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| Utah County | Maintenance | 11/15/1990 | Moderate | 516,564 | 2017-2019 | 0.0 | Yes | 3 / 3 | |
03/27/2020 85 FR 10989 |
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Utah PM-2.5 (1997) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
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Utah PM-2.5 (2006) Areas Return to map Area designated nonattainment for the 24-hour standard Top of page |
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| Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Design Value 24-Hr (µg/m3) (entire area) |
Meets NAAQS |
SIP Requirements Original/ Approved |
Clean Air Determination Citation Effective Date Click to view FR notice |
Redesignation Request Date |
Redesignation Citation Effective Date Click to view FR notice |
| Logan | Nonattainment | 12/14/2009 | Moderate | 112,675 | 2017-2019 | 33 | Yes | 8 / 0 | 10/19/2018 83 FR 52983 |
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| Provo | Nonattainment | 12/14/2009 | Serious | 517,537 | 2017-2019 | 32 | Yes | 15 / 0 | 05/10/2019 84 FR 14267 |
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| Salt Lake City | Nonattainment | 12/14/2009 | Serious | 1,665,137 | 2017-2019 | 30 | Yes | 15 / 0 | 10/28/2019 84 FR 51055 |
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Utah PM-2.5 (2012) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
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Utah SO2 (1971) Areas Return to map Top of page |
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| Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Design Value Annual/24-Hr (ppb) (entire area) |
Meets NAAQS |
SIP Requirements Original/ Approved |
Clean Air Determination Citation Effective Date Click to view FR notice |
Redesignation Request Date |
Redesignation Citation Effective Date Click to view FR notice |
| Salt Lake County | Nonattainment | 11/15/1990 | 1,029,655 | 2019 | 1 / 2 | Yes | 2 / 2 | |
04/19/2005 | ||
| Tooele County (part) | Nonattainment | 11/15/1990 | 58,218 | / | 2 / 2 | |
04/19/2005 | ||||
Utah SO2 (2010) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
| We have made our best effort to ensure that the data contained in these reports is accurate. We note that there may be brief delays in
updating the reports as we receive new state submissions and we take rulemaking action on plans. In order to assist us in providing
accurate information, we request that you contact us by clicking on the "Contact Us" link near the top of this page with any comments
regarding or corrections to the posted information, including concerns about whether the entries reflect the most recent status. Current and historical design value data can be found on the EPA Air Quality Design Values website and the EPA Green Book contains comprehensive nonattainment area, designation status, and historical information. The level of the 1-hour NAAQS for sulfur dioxide is 75 parts per billion (ppb) calculated as the 3-year average of the 99th percentile of the annual distribution of daily maximum 1-hour average concentrations. |